syzbot


WARNING in ext4_evict_inode (3)
Status: upstream: reported on 2022/02/17 19:42
Reported-by: syzbot+8c7921ce857a731af281@syzkaller.appspotmail.com
First crash: 103d, last: 1d04h
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ext4_evict_inode (2) 1 258d 254d 0/22 auto-closed as invalid on 2022/01/09 16:34
upstream WARNING in ext4_evict_inode 1 528d 524d 0/22 auto-closed as invalid on 2021/04/15 03:41

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3708 at fs/ext4/inode.c:227 ext4_evict_inode+0xfae/0x1970 fs/ext4/inode.c:227
Modules linked in:
CPU: 1 PID: 3708 Comm: syz-executor.3 Not tainted 5.18.0-syzkaller-07857-gbabf0bb978e3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:ext4_evict_inode+0xfae/0x1970 fs/ext4/inode.c:227
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 42 09 00 00 48 8b 45 28 41 bc 01 00 00 00 48 89 04 24 e9 39 f6 ff ff e8 52 b5 5a ff <0f> 0b e9 b4 f5 ff ff e8 26 5a a6 ff e9 4c f1 ff ff 48 89 cf e8 19
RSP: 0018:ffffc90002f8fc98 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff920005f1f99 RCX: 0000000000000000
RDX: ffff888042fa4140 RSI: ffffffff821e440e RDI: 0000000000000003
RBP: ffff888074021330 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff821e39c0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88802509b4c8 R15: ffff8880740995f8
FS:  0000555556ee6400(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33330000 CR3: 000000006eddc000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 evict+0x2ed/0x6b0 fs/inode.c:664
 iput_final fs/inode.c:1744 [inline]
 iput.part.0+0x562/0x820 fs/inode.c:1770
 iput+0x58/0x70 fs/inode.c:1760
 do_unlinkat+0x418/0x650 fs/namei.c:4224
 __do_sys_unlink fs/namei.c:4265 [inline]
 __se_sys_unlink fs/namei.c:4263 [inline]
 __x64_sys_unlink+0xc6/0x110 fs/namei.c:4263
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f3097288a47
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd72b092a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3097288a47
RDX: 00007ffd72b092e0 RSI: 00007ffd72b092e0 RDI: 00007ffd72b09370
RBP: 00007ffd72b09370 R08: 0000000000000001 R09: 00007ffd72b09140
R10: 0000555556ee7873 R11: 0000000000000206 R12: 00007f30972e21f8
R10: 0000555556ee7873 R11: 0000000000000206 R12: 00007f30972e21f8
R13: 00007ffd72b0a430 R14: 0000555556ee7810 R15: 00007ffd72b0a470
 </TASK>

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-qemu-upstream 2022/05/26 23:46 upstream babf0bb978e3 3037caa9 .config log report info WARNING in ext4_evict_inode
ci-qemu-upstream 2022/02/13 19:39 upstream 42964a18f81c 8b9ca619 .config log report info WARNING in ext4_evict_inode
ci-upstream-net-kasan-gce 2022/05/02 04:09 net-next 6e28f56c0d1d 2df221f6 .config log report info WARNING in ext4_evict_inode
ci-upstream-linux-next-kasan-gce-root 2022/05/06 14:48 linux-next 38a288f5941e e60b1103 .config log report info WARNING in ext4_evict_inode